The Jubilee line on the Tube has platform doors which help; http://citytransport.info/Digi/P1170633a.jpg http://citytransport.info/Digi/P1170633a.jpg people que

The Jubilee line on the Tube has platform doors which help; http://citytransport.info/Digi/P1170633a.jpg http://citytransport.info/Digi/P1170633a.jpg people queue by the doors until train arrives, safely separated from the train. People stack up on each side of the doors and let passengers off through the middle before boarding https://i.pinimg.com/474x/19/91/b9/1991b9aa93463b7fa254e1d598708f01--london-transport-the-tubes.jpg https://i.pinimg.com/474x/19/91/b9/1991b9aa93463b7fa254e1d59... Some stations have multiple routes to the platform to improve spread https://i.pinimg.com/474x/d0/75/91/d075917d0c293cf183461e99b93de3cf--poster-design-london-transport.jpg https://i.pinimg.com/474x/d0/75/91/d075917d0c293cf183461e99b...